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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of an acoustic diffusion plate and
a windshield, and FIG. 2 is a vehicle mounting speaker to which the acoustic diffusion plate and a
windshield are attached. FIG. 2 is a side view of the device (however, an acoustic diffuser and a
windshield are shown in a cross-sectional view taken along line A-A in FIG. 1). 1 ииииии Outer
cylinder, 2 иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Sound Diffusion plate and
windshield, 6 и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и convex central part 12 и и и и и и и и и и и и и и и и и
и и и и и convex central part 12 ..... Mounting stand.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an on-vehicle invehicle speaker system, such as an on-vehicle speaker system, suitable for use in high wind speed
vibration flow. Generally, a small and efficient horn speaker with a diaphragm is used as an onvehicle speaker. Since the directivity is sharp, the service range is limited to the IIH direction of
the speaker-in the related running, there is a problem that the diaphragm is compressed by
weathering as in the case of the cone speaker, and one sound quality is disturbed. In the past, an
acoustic diffusive plate was attached to one end during sound emission to improve sharp
directivity of a horn speaker, and sintered particles were streamlined to eliminate the influence of
the climate. Some of the sound transmission windshields formed into a shape are combined with
the opening end of several lines at the opening end, and there are many holes formed around this
junction, but the former is mainly used indoors and used outdoors In this case, the wind from one
front is configured to be collected backward, which causes a disadvantage that the diaphragm is
compressed, and the latter is effective against the windshield, but it is not The problem was that
there was not much effect, and that the output pressure and sound quality were low. This study
was made to eliminate the disadvantages of L. By attaching a windshield that doubles as an
acoustic diffuser to the tip of the middle cylinder that protrudes to the front of the outer cylinder,
it is safe even at one-speed running. SUMMARY OF THE INVENTION It is an object of the present
invention to provide a vehicle mounting speaker device capable of performing an unintended
operation. The configuration of the present invention will be described based on the drawings.
FIG. 1 shows an embodiment of an acoustic diffuser and a windshield. (2+ FIG. 2 shows an
embodiment of the vehicle mounting speaker device to which the sound diffusion plate and the
windshield are attached. Reference numeral 1 denotes an outer cylinder of the speaker main
body-a front end 4 of an inner cylinder 6 protrudes forward of an open end 2 of the outer
cylinder 1; an acoustic diffusion plate and windshield 5 is attached to the front end 4. In this
acoustic diffusion plate and windshield 5, annular partition plates 6, 6 having different diameters,
each formed of a long strip made of bite resin or metal, are arranged concentrically and multiply
and fixed by a fixture 7. It is attached and fixed to the middle cylinder tip 4 with a screw or the
like via the fixture 8. The partition plate 6 is uniformly curved and formed into an arc-shaped
cross section so that a convex central portion 9 is inward and one side end 10 is outward in a
circumferential direction, and the centering multiple is also performed. It is arranged. In addition,
a strip may be arrange | positioned spirally. The partition plate 6 made of this band plate. When
the sound diffusion plate and the windshield are attached to the speaker device, the air flow from
the front to the rear of the speaker device is changed in its traveling direction so that it does not
flow inside the open end of the speaker device outer cylinder 1 It is curved and formed.
The sound diffusion plate / windshield 5 has a hemispherical shape or a part of a sphere cut in a
plane when viewed from the side (3), but the shape is not limited to this shape. If it is observed
from the front, it may be j'J-shaped or limited to one circle. If the open end 2 or square of the
outer cylinder 1 is formed in a square with the partition plate, its diameter is both Are selected to
be approximately equal. In the unit case 11 at the rear end of the outer cylinder 1, a driver unit
12 which is an electro-acoustic transducer is housed, and an inner cylinder 16 connected to this
throat is housed in a statement 6 There is. 14 is a mounting stand for mounting on the roof of a
vehicle-a fender or the like. Since the vehicle mounting speaker 4 of the present invention is
configured as shown in F, the air flow from the east of this nupeca device toward the side is
rounded on the curved surface of the partition plate 6 as indicated by dots and arrows. As the
traveling direction is changed to the outside of the open end 2 of the outer cylinder 1 and sent
out, the air flow does not enter inside the open end of the outer cylinder 1, and the diaphragm
inside the driver unit 12 There is no pressure or damage to the wind pressure from (4). In
addition, the output of this speaker device is, as indicated by the dashed-dotted arrow, that the
sound wave radiation direction is diffused by the partition plate 6 in the front side
circumferential direction: 2 [11] . Furthermore, since the distance between the partition plates 6
is relatively large, the output sound pressure and the sound quality are hardly degraded. As
described above, in the present invention, a strip plate which is curved and formed into an arc
shape or an arc shape in a cross section is concentrically arranged on the tip of the middle
cylinder which protrudes more than the outside quotient so that the convex portion of the strip
faces inward. Since the sound diffusion root and windshield number which is arranged in
multiples are attached, the diaphragm is not compressed by wind pressure even when used in
high wind speed air. The effect is that it is suitable for mounting on the first vehicle with almost
no drop in the speed, and that the service area can be extended to the + it side circumferential
force direction by altering the sharp directivity of the horn speaker towards the curved katsuno
direction. Have.
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